Questions tagged [bitrate]
Bitrate refers to the amount of information transferred or processed per unit of time, usually expressed in bits per second (bit/s) or multiples thereof. Bitrate can be used to express a number of things, such as the bandwidth of a computer interface, the level of quality of a digital audio or video stream, or the speed of file transfers.
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Why does the video file (x264) made with ffmpeg have a much higher bitrate compared to when I reencode it using the same settings in Handbrake?
I'm a ffmpeg beginner and am converting a series of .png images taken every 10s into a timelapse video. The images are named pic1.png, pic2.png, etc.
For this I'm using the following ffmpeg command:
...
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How to consider crf, -maxrate and -bufsize of a lossless video for whatsapp status
I am using ffmpeg to encode my videos to upload them on Whatsapp status. This videos are <30 sec duration, and the output size should be in 10-14mb range.
Suppose I have a video of size 50 MB with ...
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Why is ffprobe showing N/A for bitrate?
I am transcoding a video from VP9/opus webm to H.264/aac mp4. I'd like to maintain bitrate or reduce bitrate if either the audio bitrate > 128k or the file becomes larger than 5MB.
So I try to ...
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FFMPEG - Display per frame information for an AV1 encoded video
So I am trying to view per frame information for an AV1 encoded video using ffplay with the following command:
ffprobe -show_entries frame=pict_type,pkt_size,pkt_pts_time -select_streams v -of csv=p=0 ...
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How to reduce the bandwidth in OBS studio using VLC video source?
There's lots of tips and tricks how to reduce your streaming bitrate but I couldn't find no specific topics on how to control your overall bitrate using specifically VLC video source.
Basically the ...
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Bitrate over Codec for the best quality?
AFAIK bitrate means how many bits are used to record the audio/video within one second, while codec (or file format) means the compression method to store the clip.
To me, the higher the bitrate, the ...
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FFMpeg: convert any file (video/audio) to custom bitrate and dynamic range
So, in my specific case, I have a couple of FLAC files that are approximately 1500kb/s, and they are 24-bit. I want to convert them to 16-bit, and to make them around 500kb/s
I didn't find any info ...
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Cannot change default audio format (Windows 11)
Microsoft Surface Book 3, 13.5″, Windows 11 Pro. The default sound output device won’t let me change the sample rate and bit depth. The corresponding Control Panel menu is grayed out with 16 bit, ...
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Windows 10 Groove music default app can't show songs bitrate?
I opened some mp3s on Windows 10 and Groove Music is launched as default app to reproduce them... Well, I was looking to have songs bitrate shown in current playlist (together with song title, ...
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Audio - format and bitrate effect on quality
I have been interested in audio and improving its quality for a while now and after researching for a while I found out how difficult it can get when you find the answer to a question and then find a ...
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Why has bitrate changed after remuxing with ffmpeg?
I am running this command to remux a .VOB file into a .mov file, without re-encoding.
ffmpeg -i input.VOB -c copy output.mov
The details of the movies' codec, framerate and bitrate in QuickTime's ...
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ffmpeg - Variable CRF based on Bitare
I use ffmpeg to encode some videos I downloaded from various streaming sites to HEVC. In windows I use a batch file to convert all these files in a directory.
ffmpeg -n -i input.mp4 -c:v libx265 -crf ...
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ffmpeg - Skip file if the bitrate is lower than certain amount
I use ffmpeg to encode some videos I downloaded from various streaming sites to hevc. In windows I use a batch file to convert these files.
FOR /F "tokens=*" %%G IN ('dir /b *.mp4') DO ...
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How do I mass-modify the bit rate of WAV files?
I have about 200-250 WAV files that I need to work with in Unreal Editor for a game mod. The editor wouldn't accept WAV files with a bit rate higher than 768 kbps. Annoyingly, the WAV files are mostly ...
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In Windows, how do I list the extended attributes — or metadata — for an MP3 file?
I have multiple folders with MP3 files. Some files are duplicates but in separate folders.
I want to create printable list of extended attributes — or metadata — to retain the file with the highest ...
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What is my computer's audio card's DAC bit resolution?
I know that every sound card converts digital data to analog sound using a DAC chip. This chip's quality greatly determines the sound quality.
Is there a way to query parameters such as bit ...
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DDR4-2933 data transfer rate
DDR4-2933 functionates at 2933 MHz
How do I find peak data transfert rate in GB/s from there ?
Is it vendor/capacity dependent ? Is there a universal conversion approach ?
It should be something ...
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Faster decoding with FFmpeg
I am using ffmpeg for live stream processing. Basically, I compiled ffmpeg myself. Unfortunately, I notice that when the bitrate gets a bit high (> 15mbps H264), the decoding can not keep up with the ...
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ffmpeg (libmp3lame) doesn't compress to correct bitrate - just Audio
I have some uncompressed WAV files that I wan't to compress to a CBR of 8kb/s - which the documentation says is possible by using -b:a 8k in the ffmpeg command.
however when I run it on my raw audio ...
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What is the difference between bandwidth and bit rate?
I have seen two definitions for bandwidth: "For a transmission medium, the range of signal frequencies it may transmit" and "The maximum amount of data that can be transmitted in a ...
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FFMPEG Constant Bitrate Transcoding
I have been playing around with FFMPEG and I am trying to achieve a streaming bitrate that is as constant as possible. I have gone through the FFMPEG documentation and examples, but when I measure the ...
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MediaInfo's 'Overall bit rate' vs 'Maximum Overall bit rate'
I'm comparing duplicate media files using MediaInfo, so that I can keep the one with the best quality and delete the other one. However, I'm confused by some of the information.
One Duplicate
...
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Is it possible for a video segment to be encoded at a higher bitrate than the video segment in the source file?
I am currently experimenting with video compression on Handbrake and I would like to know if suppose a video segment in the source file is around 11000 kb/s, is it possible for it to be somehow ...
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Why does converting a m4a/wma to wav result in a ridiculously high bitrate file?
If I use the simple command ffmpeg -i file.m4a file.wav, the resulting file invariably seems to have a bitrate of around 750kbit/s (resulting in a 500mb file from a 100mb one my case).
I've already ...
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Bitrate data on RTMP stream
When I check the RTMP stream with ffprobe and rtmpdump, Some streams are show the audio and video bitrate data. But some others not.
What cause this happen?
And, I'm using the wowza as the origin ...
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x264: which -tune for best live streaming quality without increased bitrate?
I am trying to stream an FPS shooter game from OBS 20.0.1 at the lowest bitrate possible whilst maintaining the best quality possible (i.e. less blocky pixels).
I am concerned that more reference-...
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How to change audio bitrate to exactly 85 Kbps and preserve video setting?
When I try to change the audio bitrate for my video, also my video output is lower than it should be. Also my output video should be in MOV format.
I tried:
./ffmpeg -i myvideo.mov.mp4 -b:a 85k ...
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Ffmpeg change bitrate of .mp2 file [duplicate]
How can I change the bitrate of an .mp2 file usin ffmpeg.
So far I tried following:
ffmpeg -i myAudio.mp2 -minrate 160k -maxrate 160k -bufsize 160k myAudioNew.mp2
It creates me an Audio but if I go ...
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Is it possible to sort all my songs collection (in iTunes) by bitrate?
The reason I want to do this is that I would like to change the bitrate of all of my songs superior to 192 kbps, so I get more storage in my iPod classic. My library has been gathered for years now ...
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converting to the same format many times - how much quality will I lose?
Almost a decade ago, I converted all my mp3 files higher than CBR 192 kbps to exactly CBR 192 kbps. This is because I can no longer here any difference between CBR 192 and CBR 320 (using and ABX test),...
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Determine video bitrate using ffmpeg
I am trying to determine video bitrate(For transcoding) using ffmpeg command,I tried following command.
ffmpeg -i 28572615.wmv
and it produces the following output
Input #0, asf, from '28572615....
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Why ffmpeg changes bitrate of mp3 when speeding it up?
I speeded up (1.2x) an mp3 file using these instructions, but its real bitrate changed from 192 kbps (19 kHz cut-off) to 128 kbps (16 kHz cut-off). Why? Is it right? Or do I need to add any extra ...
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What are the factors that affects a video's quality?
I am new to this website and this is my first question, really appreciate if someone can provide some advice about my current problem.
I've been testing some videos on my computer to see at what ...
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My videoplayer is suddenly buffering local videos
Today I was watching Band of Brothers which I have stored locally on my hard drive in 720p.
Watching the first two episodes went perfectly as usual, however when viewing the third episode my Kodi ...
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Resize in FFmpeg
I have a video which has a resolution of 1920x1080p. I want to re-encode this video (with libx264 for video and aac for audio); Downscale it first to
1280x720p (with the same aspect ratio) while ...
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Bitrate-MediaInfo [closed]
What is the BitRate_Maximum/String (for video and audio) which I've been seeing on MediaInfo (What does "String" means here?) ?
Thank you for your time!
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Full-SBS 3D movie bitrate when ripping
When ripping movies from iso to full side by side format, 3840x1080 usually (1920x1080 each eye). Shouldn't the bitrate double? I've always wondered that, what do you think?
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Is there a way to determine resolution of a video using its bitrate?
I have a use case where I need to determine the resolution of a video depending on its bit rate data e.g. 236k, 668k, 1299k, 1900k etc.
I also have data about its dimensions e.g. 320x240, 480x360 etc....
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When doing 2 pass video encoding with FFmpeg, how to find the optimal bitrate?
When doing 2 pass video encoding with VP8 (libvpx), is there a way to figure out the optimal bitrate, so I don't have to guess?
Something like a small compression test, or some ffmpeg command, that ...
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Are there any benefits to buying high write speed Blu-ray disks?
There are many different type of blu ray disc out there, the hestitation to buy was started from read/write speed of a blu ray disc.
I'm looking for Verbatim/Memorex/Sony disc, the most common read ...
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Reducing bitrate with ffmpeg using `-b:v 500k` doesn't actually reduce bitrate to 500k
I am trying to create several downgraded versions of a video file with ffmpeg. I am using the following command via the command line (the command is taken from the documentation):
ffmpeg -i ../../tos....
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Re-encode AC3 5.1 audio with variable bitrate using FFmpeg
Does the AC3 audio format support variable bitrate encoding?
If so, is it possible to use FFmpeg's -vbr option to achieve that?
I'd like to avoid converting from 5.1 to a 2-channel stereo because I'...
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How to consider bitrate, -maxrate and -bufsize of a video for web
I am using ffmpeg to encode my videos to upload them on the web. I saw this post about using ffmpeg, but didn't quite get as to how to consider the values.
Suppose I have a video of size 70 MB with a ...
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Does image quality deteriorate in video if rendered with higher bitrate?
Let's say I want to render a music video with a still image on it (1920x1080) resolution, and I know if I were to decrease video bitrate, the image quality would deteriorate, how about if I would ...
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Unable to re-encode audio stream with different bitrate using ffmpeg
A similar question has been asked elsewhere without a satisfying answer for me.
The following ffmpeg command results in error. When "-c:a copy" is added to just copy the audio stream, the video ...
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Search hard drive for all media files of a specific bitrate?
Is it possible to search my hard drive for all MP3's of a 320 bitrate?
I am using Windows 7 Professional 64 bit.
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Convert all music files to 192 bitrate mp3 except of those already ≤ 192 kbps
What do I have: 100k+ music files in different formats with various bitrates
(mp3 64/128/192/256/320kbps, aac 256kbps, flac, alac). Most of them are mp3 320kbps.
What do I want: mp3 64/128/192kbps
Why:...
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'iwlist wlan0 bitrate' says "unknown bit-rate information"
I set bit-rate of wireless interface 'wlan0' using
iwconfig wlan0 rate 54M fixed
Now, how do I verify if it was set right?
iwlist wlan0 bitrate
says
unknown bit-rate information
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FFMPEG encoding settings for 1080/60fps/h264 - framedrops
I want to use latest ffmpeg to encode set of JPG frames to 1920x1080 60fps h.264 movie.
I'm looking for set of parameters that will allow smooth playback of encoded video on fairly strong PC machines ...
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Is it possible for ffmpeg to encode with a spatially variable bit rate?
I would like to reduce the overall bitrate of a 4K 180 degree FOV video by decreasing detail outside of 60 degrees while retaining it in the center. Is that possible?
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